Analyze Name Record For Free

The purpose of the PTR record is to verify that the sender matches the IP address it claims to be using. This email ID check process is also known as reverse DNS lookup. It's the reverse of the forward DNS lookup process that browsers use to convert a domain name to a numerical address: the IP address.

So, to summarize, A Records point directly to IP addresses, while CNAMEs point to A Records. MX records point to mail servers and help route emails to their proper destinations.

MX Record Example A suitable email address for our purposes would be something like user@example.com. The web server's sender would thus send their DNS request to the example.com domain. The name server's zone file for the appropriate records would then look like this: $TTL 1200 example.com.

It is suggested that a domain have at least two MXs. The server with the lowest number has the highest priority. Therefore, an MX server with a value of 2 is more important than one with a value of 15. A "0" indicates the highest possible priority.

Like A records, AAAA records enable client devices to learn the IP address for a domain name. The client device can then connect with and load the website. AAAA records are only used when a domain has an IPv6 address in addition to an IPv4 address, and when the client device in question is configured to use IPv6.

Mail is delivered to the mail exchange server with the lowest preference number (highest priority), so the MX record you use for mail routing should have the lowest preference number, typically 0. Note: Use 0 for your mail routing record, and 10 for the record for validating that you own your domain.

A DNS 'mail exchange' (MX) record directs email to a mail server. The MX record indicates how email messages should be routed in ance with the Simple Mail Transfer Protocol (SMTP, the standard protocol for all email). Like CNAME records, an MX record must always point to another domain.

CNAME records are typically used to map a subdomain such as or mail to the domain hosting that subdomain's content. For example, a CNAME record can map the web address .example.com to the actual web site for the domain example.com.